First off, I think that it is an interesting discussion and that a couple of things should be noted in this particular case. The first is that Blackjack's schematic is a representation that he made and noted that it is not thru-wire as is the original. So is the schematic a representation of his bait donated to TU? The second point is that in any industry building a better mousetrap is always problematic when you are not able to "protect" that idea from duplication as it seems is the case with lurebuilding. It doesn't make it any more ethically sound however and I understand where you are coming from.
I was mostly drawn in by reading posts by many of the "tenured" builders here that discussed making a better bait through experimentation and care vs. what can be purchased in most cases. For me personally (I'm recreational only), if somebody copied my design of mine I would be flattered, but I don't think I will see that happening any time soon. Good discussion topic and sorry for rambling, but a 9th consecutive game of go fish awaits in the next room and I am procrastinating.